Symptoms:

• The first symptom is the change of spindle leaf colour from green to yellow and then brown.
• The leaves rot and the growing bud rots causing death of the palm.
• The affected young leaf whorl can be easily pulled off.
• The outer leaves also become yellow and droop off one by one leaving a bare stem.

Management:

• Destruction and removal of dead palms and bunches affected by mahali disease and drenching crowns with Bordeaux mixture 1% including surrounding healthy palms.

Image Source:

http://www.kissankerala.net:8080/KISSAN-CHDSS/English/index1.html